70825771 has 2 divisors, whose sum is σ = 70825772. Its totient is φ = 70825770.

The previous prime is 70825753. The next prime is 70825813. The reversal of 70825771 is 17752807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70825771 - 2⁵ = 70825739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70825771.

It is not a weakly prime, because it can be changed into another prime (70825721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35412885 + 35412886.

It is an arithmetic number, because the mean of its divisors is an integer number (35412886).

Almost surely, 2^70825771 is an apocalyptic number.

70825771 is a deficient number, since it is larger than the sum of its proper divisors (1).

70825771 is an equidigital number, since it uses as much as digits as its factorization.

70825771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 70825771 is about 8415.8048337637. The cubic root of 70825771 is about 413.7427883361.

The spelling of 70825771 in words is "seventy million, eight hundred twenty-five thousand, seven hundred seventy-one".